Looper-support.



F. S. NORTH.

LOOPER SUPPORT. APPLICATION FILED 001'. 12, 1911.

1 9 1 1 G 8 1 4 Patented Sept. 15, 1914.

' 2 SHEETS-BHEBT 1 F. S. NORTH.

LOOPER SUPPORT.

APPLICATION FILED 0OT.12,1911.

1,110,814, Patented Sept. 15, 1914.

2 SHEETS-SHEET 2.

THE NORRIS PETERS CO.. PHOTO-Ll rHu. \VIISHINLITUN. u

. FRANCIS s. nonriijor CI-IICAGQIILLINOIS, ASSIGNOR 1,11o,s1a.

UNI ED sTATEs PATENT OFFICE.

TO -UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATIONOFILLINOIS.

Loornn-surron'r.

To all tohomit may concern 1 Be it known that I, FnANois S. NORTH, a

citizen of the United States, residing at Chicago, in the county ofCook, State of Illinois, have invented certain new and usefulImprovements in Loo-per-Supports, of

which the following is a description, refer ence being had to theaccompanying drawing and to theletters and figures of'reference markedthereon.

My invention relates to an improvement in sewing machines, the objectbeing especially to provide a machineof the chain stitch type, which iscapable'of greater range and nicety of adjustment of the loopers thanthose'heretofore used.v

;It has heretofore been proposed to pro vide a looper rocker with aplurality of sockets for the reception ofseveral loopers,

and also to provide the looper-supporting shaftwith a plurality-ofrockers. The present invention is more particularly an improvement onthe latter invention, which is illustrated in the patent to Kramer,

885,624 of April21st, 1908, whereby asabove. I

stated, greater variety and nicety of adjustment is accomplished, andwhereby when adjusted, the looper rocker is positively held from lateralmovement.

An object of the invention is to provide means for positively holdingthe pivot stud for the looper carrier from lateral movement on thelooper support, which means is so constructed as to permit an adjustmentwhich is a fractional part only of the diameter of the supporting stud.1

The invention is illustrated in the accompanying drawings, in whichFigure 1 is a front elevation of a portion of a sewing machine embodyingmy invention; Fig. 2 is a perspective view of a looper support embodyingmy invention; Fig. 3 is a rear side view; Fig. 4 is a rear side view,showing one of the pivot stud plates reversed; Fig. 5 is a section onthe line 5-5 of Fig. 4c; and Fig. 6 is a perspective view, showing theparts all detached.

In these drawings, 1 represents the base plate of a union specialmachine of a well known type.

In the present instance, the invention is shown as applied to a machinehaving a very wide presser foot 2, with two adjustable needles arrangedat a considerable distance 7 Specification of Letters I'atent. I, Patefltedsept. 15, 1914. Applicationfiled October 12,1911, Serial n0,654,328. Y i

may be varied, in accordance with the style sewed, the loopers,ofcourse, being changed in number. and arrangement, as hereinafter will bedescribedJ I I 3 represents the usual looper support, TJlVOi'Gdttt theend 42 to a stationary part of the machine frame, and at the other end 5attachedto they rock shaft driven from the main shaft 6,whereby theusual sidewise or of work or, width of scam required to be Ineedle-avoiding movement is given the loopers carried by ,said loopersupport. 1

, This looper support, as herein shown, is provided with twolongitudinal slots 7, and

looper support, are set, mortised or otherin these slots,.1near theinner face of the Y; f

wise inserted, so as to be rigidly held, plates I 8 having openings 9just large enoughjto, receive the end of the pivot stud 10, which ispassed through said plate, and held sepivot stud 10 passes through thelooper carrier orrocker 12 and come 13-, the looper shown in thedrawings, these plates are set in a recess formed in the loopersupportand the walls of this recess form members integral with thesupport for preventing lateral movement of the plate.

The looper carrier or rocker 12 is concurely by the nut 11. S Thisheadedbolt or nected with the other looper carrier or rocker by theadjusting rod 15. The shanks of the loopers 16 are set in the openingsin the sockets. The openings 9 in the plates 8 are set eccentrically,that is, nearer one end than the other, and by this arrangement and bytaking out the plates and reversing their position, considerable rangeofadjustment for the looper carriers is afforded, and when the plates havebeen inserted in the slots and the nuts 11 screwed on the pivot studs,no accidental displacement is possible.

Itwill be seen that by providing a number of plates with pivot studopenings arranged in respectively different positions, the greatestpossible range of adjustment may be eifected, and to facilitate the workof adjustment, the removable plates will be suitably marked to indicatethe gage of the machine.

Having thus described my invention, what I claim as new and desire tosecure by. Let- I 55 apart, but, of course, it will beunderstood I tersPatent, is

1. r The combination of a"'lo0per support, a loo-per carrier, a studmounted on said sup"- -port on which said "carrier is pivotally mounted,and'means for positively holding said stud from lateral movementrelative to plate havingmeans for engag'nig said stud,

andmeans forengaging and holding said v plate from endwise movement onsaid looper C p ,t i fi2. The oombinationpfa looper support},

support.

Fa 'looper' carrier, .a stud mounted on said to receive said stud aplate havin an a er- J i H The/combination of a looper; support, alooper carrier; a stud on said support on which said carrierispivot-ally mounted, said support being slotted to rece ve said stud,

a platewhaving an aperture therein fitting "said stud, and'means forholding said plate 1 from lateral movement relative to said sup- =-port,said aperture in said'plate being located nearer one end thereof thanthe other,

Whereby the reversingof said plate adjusts said stud for the-loopercarrier relative to 7 said support.

{1. The combinationof a looper support 1 a looper carrier, a stud onsaid support on v v .ment of saidplate." said looper support including areversible t stimony whereof I affix my said pivot stud said supporthaving-in:

tegral members for preventinglateral movej -5;"'Tl 1e' combinationoit' alooper support,

"a looper carrier; a stud on said; support on \vlneh said; carrierls'plvotally mounted, a 40 plate haviugi'an opening therein surrounding'said pivotstud, said support having in tegral members for preventinglateral move-, merit of said plate, the QPe11ing in said plate beinglocated at one side the center thereof. whereby thereversin of saidplate adjusts tlie looper carrier stud relative to said supe fillnflasewing machineytlee combination "with aneedle bar carrying aplurality ofspaced "needles, 'a jleoper support. a series of looper carriersarranged respectively upon.

opposite sides V of the needle bar, each 'lo-oper [carrier havinq apivot stud for the carrier.

adjusted: fractional parts of the; diameter of thestud" and positivelvheld f m l t t movement W-henadjusted. 3

signature.

in presence of twoitnesses. p

- FRANCIS SNORTH.

XVitnesses: v, i

I CAL. STU TEV NT,

G MQNEIL (Mp lea of this patent may be obtained for five emits each, byaddressingthe Commissioner of; Iatents, wasmn mn m c.

